Cooperative Research Units
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Dolly Varden Char Bioelectrical Impedance Modeling


September 2012 - May 2013


The objective of this research is to build and validate BIA models for Dolly Varden. Fish (N=192) were sampled from overwintering grounds in the Ivishak River, located on the North Slope of Alaska during sampling events in September of 2009 to 2011. In the field, fish were sacrificed, weighed, measured, and BIA measures of resistance and reactance were collected. Samples were transported to University of Alaska, Fairbanks laboratories, where they were analyzed for proximate content using standardized methods (AOAC 1990). All subsets multiple linear regression will be used to generate predictive equations relating BIA data to laboratory derived estimates of lipid, protein, water, and ash. The validity of these models will be accessed by using k-fold validation to generate diagnostic statistics such as root mean squared error and the PRESS statistic.


Current Staff

Federal Staff: 95

Masters Students: 240

Phd Students: 143

Post Docs: 52

University Staff: 245

5 Year Summary

Students graduated: 702

Scientific Publications: 1948

Presentations: 4253



Funding Agencies

  • NWRS Alaska


Cooperative Research Units Program Headquarters Cooperators

  1. U.S. Geological Survey